Home / 23,065.56-31,823.89-12,990.48

Finding the Fourth Proportional to 23,065.56, 31,823.89 and 12,990.48

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Solution

The fourth proportional to 23,065.56, 31,823.89 and 12,990.48 is: 17,923.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,065.56 : 31,823.89 = 12,990.48 : x
  2. Step 2: Convert to fraction form
    23,065.56/31,823.89 = 12,990.48/x
  3. Step 3: Cross multiply
    23,065.56x = 31,823.89 × 12,990.48
  4. Step 4: Simplify right side
    23,065.56x = 413,407,454.75
  5. Step 5: Solve for x
    x = 413,407,454.75/23,065.56
  6. Step 6: Final answer
    x = 17,923.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.